Arriving in the next world upon departing from Twilight Town, everyone was casually walking towards a large building with an M logo on the top. It wasn't until seconds later everyone was startled at the sight of the others appearances and jumped back into combat mode… for they were all monsters.

"Wha?! G-Guys… why do you all look like monsters?!" Sora asked.

"Funny, we were about to say the same about you." Asta said.

"Must be the magic of this world. Guess this is what most people, er, creatures look like here." Cobalt said.

"Ugh… I never thought I'd take up this form again…" Sectonia said.

"Yeah, never thought we'd actually see it again." Hope said.

"Hey, could you guys possibly take some steps back? You're giving me the heebie-jeebies." Sora said.

"YOU take a step back!" Donald snapped.

"C'mon fellas, I think our new looks could turn out to be lots of fun!" Goofy piped in.

"Yeah...hey...look at that sign. It says...We Scare...because we care?" Izuku asked.

"That doesn't sound very caring to me." Theo said.

"Actually kind of gives me goosebumps." Petra said.

"Let's go exploring then." Rainbow said as the doors opened automatically. "Automatic doors...nice."

"Well, this is Monsters Inc, so it's the same as the movie apparently." Ace said in a distorted voice.

"Monsters what?" Theo asked before seeing two other monsters at the other end of the reception area. One was a large, horned and blue furred monster with purple spots and the other a small green one with one eye. Both were with a small child.

"Oh no!" Sora said as they ran in.

"Sora, stop!" Ace called. "Look." He said as they saw the large monster playing with the child as she laughed. She suddenly saw the group, prompting the blue monster to turn around.

"Hmm? I wonder who those guys are?" he asked.

"What?! Careful Sulley, if they see the K-I-D…!" the smaller one warned.

"It's fine, we got nothing to hide." the larger one replied.

"Hello there." Papelne waved.

"Look, it ain't what it looks like. This kid...popped up out of nowhere. We gotta call the CDA about this. It's uh...oh A code 835." the smaller one said.

"You're not trying to scare that girl, are you?" Ivy glared.

"Yes! I mean, no no no!" the green monster said. "We're done using scares for power here, were not scaring anyone."

"You can relax, guy. They're a trustworthy bunch." a voice said as they saw a goblin walking in.

"Limestone...thank goodness for you." Theo said.

"Oh, so you know him?" the blue monster, named Sulley asked.

"Yeah, he's uh… a friend of mine." Theo said.

"He was talking to me, kid. Yeah, I know him. He's the guy I was telling ya about." Limestone said. "The one who went and ran off for no reason. Trust me, he's a friend, same with the rest of these guys."

"Well you did put in a good amount of work while you were here….so I guess we trust ya." the smaller one said.

Hope breathed easy as he looked to the little girl. "Hey there. You must be a friend of these two. What's your name?"

"Boo!" the little girl called.

"Oh so that's your name? Nice to meet ya, Boo." Gemini said as the girl named Boo laughed happily.

"Hold on a second, you guys really aren't afraid of humans?" the green monster asked.

"They aren't. I can guarantee that." Limestone said.

"Mike Wazowski." Boo said pointing to Donald.

"Wha…?" Donald asked.

"Cmon, Boo! I'M Mike Wasowski!" The green monster replied.

"Mike Wazowski." Boo called again before turning to Papelne. "Kitty!"

"Me too?" Sulley asked. "Well, you can see the resemblances. The fur and the googly bear eye."

"My name is Donald Duck!" Donald shouted in anger.

"Mike Wazowski." Boo said running after Donald as Goofy approached.

"I'm Goofy." Goofy introduced.

"Well, my full name is James P. Sullivan, but you can call me Sulley." Sulley introduced. "And this is…"

"We already know, Mike Wazowski. And I'm Papelne." Papelne said.

The little girl giggled before she ran behind Sulley as the group saw small blue creatures.

"What the? Are these Heartless?" Fulgore asked.

"No….they're Unversed!" Aqua said.

"These things again." Ace said distortedly as he summoned his Keyblade.

"I get the sense that these guys aren't friendly?" Theo asked.

"Not at all. We'll explain later." Sora said as Sulley and Mike took Boo to safety. Sulley placed Boo behind the reception desk in one of the seats.

"Unversed… That means HE'S here." Jesse said.

"Jesse, a little help please?" Sectonia asked.

"Sorry, I'm coming!" Jesse said.

"Those guys are right Sulley. This has bad news written all over it." Mike said.

"Yeah, we gotta keep Boo safe." Sulley said.

"Right, let's do it!" Mike said as he and Sulley joined the battle.

"Ground Impact!" Papelne called unleashing shockwaves underneath a few of them.

Rainbow cut down a bunch as Theo was dealing with the larger unversed looking more like a monster from the world itself.

"Jesse, cut this thing down a peg!" Theo called taking it out at the legs with his drill.

"You got it. Dragon Swarm!" Jesse said as he dealt multiple slashes and kicks at the monsters.

"Begone!" Aqua called using Spell Weaver to clear out the last of them as Sulley and Mike dealt with the stragglers.

"Nice goin, Sulley. Even with all the extra pounds you put on." Mike complimented.

"Still running circles around you, butterball." Sulley quipped back as they laughed a little. Boo then got their attention as Sulley went to get her.

"So, any idea who those guys were?" Mike asked.

"Aqua, you said they were called Unversed, right?" Theo asked.

"I did. And that means some of us know who's here." Aqua said.

"Vanitas…" Jesse muttered.

"The Unversed...they're monsters who are born from him...monsters of negative emotions." Jexi said.

"But how come Vanitas is using them here of all places?" Hope asked.

"I might have an idea why." Jesse said. "Screams are a sign of fear, which is a negative emotion. This company is known for harvesting it, right?"

"Hey, I told you were through doing that!" Mike said. "Besides, we dunno who or what you're talking about."

"Oh...uh...basically we all have come from somewhere very far away to...get rid of them. We're sort of like...exterminators?" Usopp said.

"Just how far away?" Mike asked.

"As far as you can imagine." Goofy said.

"Okay. Well Limestone knows you guys well, so we'll believe you. I gotta ask though, are those things dangerous?" Mike asked.

"Oh yeah. Very." Jesse said.

"They sure gave Boo a scare." Sulley said.

"Sulley, I know how much ya missed her, but we have to postpone our little playdate for now. We gotta send her back." Mike said.

"You're right Mikey. Time to get our girl home." Sulley said.

"Uh, what're you planning on doing exactly?" Sakura asked.

"It's kind of a long story, but Boo is from another world." Mike said. "And we gotta send her back there to keep her safe."

"Thank goodness the Laugh Floor isn't too far from here." Sulley said.

"In that case, mind if we help you out?" Hope asked.

"Really? You'd do that?" Mike asked.

"Well, sure. Let's just say we have more years of experience with the Unversed than you might think." Hope said.

"10 years worth to be exact." Alice added.

"Great!" Mike said. "We could use exterminators around here!"

"Yeah, thanks." Sulley said. Boo then got his and Mikes attention as the two chased after her playfully.

"We always gotta help, don't we?" Ivy asked.

"Hey, they need us." Theo said. "Besides… I get the feeling this Vanitas guy is really dangerous."

"He is." Ace said.

The groups joined Sulley and Mike in escorting Boo to the Laugh Floor as Mike sang a happy tune.

"So, Sulley. Mike said that this company was done using screams. I always thought the whole point of a monster was to terrify kids. No offense." Hope said.

"See, the point of the company was to collect screams from children to use for power. But now we collect their laughter instead cause it turns out its 10x more powerful." Sulley said. "We never could've figured it out without Boo."

"The Gummi Ship is powered by laughter too. Guess that's something in common." Gemini said.

"A lot of the people on our team are laughter machines. Especially Sora." Donald added.

"Cmon, I am not." Sora tried to deny it before they heard screams coming from the Laugh Floor. Running to the premise, they saw a large group of Unversed on the floor, hopping in and out of doors attached to machines.

"What're they doing?" Hagakure asked.

"They're using the company to collect screams…. Talk about a frantic rush job." Theo said.

"Let's just get rid of them." Saki said.

"Don't worry...I'm sure they've already got it covered." Limestone said as two figures moved swiftly through the factory taking down all the Unversed. Soon standing there were Lycan and Raptor.

"There...that's the fifth wave today." Raptor said.

"Just no end to these monsters." Lycan said.

"Raptor!" Petra called.

"Petra...you look well." Raptor smiled.

"(You've got to be kidding.)" Papelne thought.

"And where were you when this was going on?" Lycan said to someone in the corner.

"Well sorry...but someone had to protect the party supplies." said a young girl with short black hair with fangs showing from her mouth.

"Vivia. Making excuses from fighting as usual I see." Theo said.

"Hey...I'm gonna be the next vampire queen of the Undead Universe some day. I gotta consider the people's joy before fighting." she said. "And Lycan...I got your favorite." she said holding a round cookie.

"So...round….too round." Lycan said jumping back in fear a bit.

"Wait, Lycan is afraid of cookies?" Hope asked.

"Not cookies...just anything round. Reminds him too much of the full moon." Raptor said.

"Ah, I see." Hope said.

"We may have to cut the introductions short." Mark said. "I think we're about to have company."

"Yeah, there may be more coming." Sulley said. "Raptor, is Boo's door still around? We gotta send her back to her room."

"Sorry but that went back to the storage just as you guys came in." Raptor said.

"Seriously? Bummer. Talk about bad timing." David said.

"That's okay, I've got it covered." Mike said scanning several key cards at each card scanner as several doors came in and implanted themselves into their slots. "Get on the doors. We're going for a ride."

"Wait, so we just ride the things?" Theo said getting on. "Won't that be dangerous?"

"Don't worry, we do it all the time." Sulley said. "I mean once, when we chased the door down the first time."

"If you say so." Hope said as everyone got on the doors as they ejected from the stations and sped off into the vault.

"And away we go!" Sectonia said.

"It's like a roller coaster!" Steven said.

"Oh man, this is sick!" David said.

They rode the rails as they combat Heartless before arriving on another part of the vault. Mike went to a door and opened it, but the wall showed.

"It's offline! We gotta power it up!" Mike said as more Heartless appeared.

"Don't worry, I'll watch Boo." Sulley said as the others went to fight.

"How are we supposed to get that door open?" Hope asked.

"Make Boo laugh. Hey Mike, come over here for a second." Papelne said.

"Papelne, what're you planning?" Starlight asked.

"Something like...THIS!" Papelne said as she tossed Mike like a bowling ball into the group of Heartless. "Strike!"

Boo couldn't help but laugh at the sight of it as the door powered up. The group ran into the door and came out the other side. They ran into it, but came out in the wrong part of the complex.

"Wait…. How'd we take a wrong turn?" Mike asked.

"Who cares? All that matters…" a voice said as a purple lizard like monster appeared from seemingly nowhere. "Is that it's the last turn you losers are ever gonna make."

"Randall?!" Sulley asked in shock.

"Who's that guy, Sulley?" Pit asked.

"A creep we banished for trying to take screams by force, and he used to be Boo's scarer." Sulley said.

"How did you get back? The door we sent you into was turned to sawdust." Mike said.

"Yeah and I almost got made into someone's wallet. Luckily a new friend helped me get back, and from now on...I'm the one in charge around here. Top of the leaderboard, baby." Randall said.

"You, collecting laughs? In your dreams, Randall." Mike said. "As it so happens, my laugh totals top the charts."

"Who said anything about me collecting Laughs? I'm after negative emotions." Randall said. "My new friends have kindly volunteered to help collect em."

"The Unversed… so the one who brought you back was…" Hope started.

"Vanitas…" Aqua muttered.

"Lemme ask you this, though. Why use Unversed to collect negative emotions?" Hope asked.

"Cause if you traumatize a kid good enough, they stay scared forever, we never run out of energy." Randall said.

"What?! That's horrible!" CP gasped. "Everyone, we must stop him here and now!" he added before charging.

"Please." Randall said turning invisible as CP crashed into the wall. "Enjoy the factory...I've made some improvements." he said.

"You okay, Cap?" Gemini asked pulling CP to his feet.

"Fear not, I've been through much worse. I'll have to remember that invisibility trick, though." CP said.

"Not invisibility, camouflage." Hope said. "He can change his skin color to blend in with any environment, like a chameleon."

"That's gonna be annoying. But I don't like what he said by improvements." Theo said.

"As I recall...Ro was looking into repairing some of the machines here." Lycan said.

"He must be near the central console that powers the whole factory. Hope Randall didn't get to him…" Mike said.

"Yeah, Ro's not much of a fighter, and he joined us for protection. The sooner we meet up with him the better." Theo said.

"Then let's go!" Eddy said.

They headed into the factory's main assembly line as they saw several lasers firing at random.

"Step back...all of you!" a voice called from the console higher up. "The machinery has gone haywire!"

"Ro! That you?" Theo asked.

"Silence you fool in flesh! I am trying to stop the machines but they continue to be beyond me!" Ro said.

"Randall must've done something to the central control unit." Sulley said.

"Tell me something I don't know. He's damaged the factory's main functions. I cannot seem to get them...Oh screw it. I'm gonna regret this later." Ro said as a mechanical arm rose into the air as it came down on the console destroying it.

The lasers then shut down as Theo marveled.

"Wow Ro… didn't think you had it in you." Ivy said.

"Whaddya mean by that?" Steven asked.

"Simple...machines are superior to organic beings in every way." said a man with many machine parts all over his body. "One day, they will very much be the main existence in any place."

"He's a cyborg…" Gemini said.

"Silence! I am no cyborg you fool in flesh! I am someone who is on the verge of a miraculous evolution for all mankind!" Ro said.

"Uh…" Eddy said. "Theo? Where'd you pick this weirdo up?"

"He used to be an employee of the All Science Go Corporation." Theo said.

"The All Science Go Corporation. Hmm…" Sachiko muttered.

"Yeah, we had a bit of a run-in with them a while back." David said.

"All Science Go...that corporation did not understand my ideal vision and even went as far as to cut off all my funding in the robotics department." Ro said.

"(I have an idea why.)" Mari thought.

"After All Science Go cut his funding, he fled the company with his Robotic Assistant and sought us out for protection." Theo explained.

"You fool and your flawed memory! I picked you because your building has a place where I could work and not be bothered. I have no need for protection." Ro said.

"Yeah…. Keep telling us that." Vivia said.

"Anyway, we need to go. No doubt once we leave the factory, Randall's tormenting will end." Hope said as they continued to the central nervous system as he saw David breathe a sigh of relief. "You're relieved. Is it because Ro wasn't the one who digitized your town?"

"Of course. But whoever it is, one thing's for sure… Once I meet them, they're going to regret manipulating the Royal Knights into digitizing Tokyo." David said.

"Yeah." Hope said as they proceeded to the door leading to the outside.

"Oh, you chumps leaving already? We haven't even got to say goodbye." Randall asid appearing.

"Don't get cocky, lizard brain. Whatever you've got for us, we'll blow right past it." Gray said.

"I'd say the same for you. I still have one more trick up my sleeve." Randall said pointing to a metal coffin of sorts. "Now, I command you to destroy them!"

Silence…..

"I'm not getting any dark readings from it." Mari said.

"Huh. What do ya know? You got scammed." Eddy said smugly.

"What the? Move! Move you stupid pile of…" Randall said hitting it.

"Looks like your ace is a Joker." Mike said.

"Oh Ed?" Eddy said. "...Get em."

"YAAAHHH! Prepare to meet your maker!" Ed yelled leaping upwards and crashing into Randall. "I am Ed! You are done for, puny rainbow lizard monster!"

"Wait, Ed. Look!" Hope said seeing nothing under Ed.

"Argh, he disappeared again!" Ivy said.

"Leave him. He won't cause us any more trouble." Sulley assured. "Right now, we have to find Boo's door and get her to safety."

The group then left the factory through the door leading to the outside, after which, a hooded member of the organization appeared near the coffin. He held a hand to the coffin as black ooze materialized from the coffin and turned into something monstrous as Randall watched from afar. He smiled at this.

"Okay...so now we can send Boo back and…" Theo said as alarms started going off. "What now?"

"There's been a fire. Just outside the factory." Ro said.

"Looks like the Unversed are done scaring and focusing on destroying stuff." Hope said.

"We have to stop them, and douse the fires." Papelne said as a chopper flew overhead.

"The CDA is here, finally!" Mike said. "They'll take care of the blaze for us."

"That leaves the Unversed for us." Raptor said.

"Let's do it." Garnet nodded.

"Hmm? It seems the Unversed have another Heartbinder." Simon said.

"Which one is it this time?" Hope asked.

"It seems to be...a lion." Simon said. "Does that sound familiar, Sora?"

"So it's Simba this time, like when he was a summon in our first adventure. Ah, that brings back memories." Hope siad.

"But it seems that he has the element of fire imbued with him." Simon said.

"Let's take care of them and get that Heartbinder." Hope said as they did so. After eliminating the Unversed, the CDA put out the flames as Sora picked up the Heartbinder and a familiar lion with flames on his paws and mane appeared briefly before vanishing.

They then followed Sulley through a maintenance pathway before arriving in the door vault once more.

"Well well well….look who's finally shown up." Randall said standing before them.

"Randall." Sulley said.

"Didn't you give up after that metal coffin of yours failed to open up?" Hope asked.

"Yeah...that pile of junk doesn't even work." Mike said.

"You sure about that?" Randall asked as he crawled his way to a high ledge.

"Wait…" Aqua said noticing the Unversed symbol. "Step back!" she shouted as a black sludge began to seep from the machine.

"What the hell?!" Theo asked as the sludge formed into a giant black slime Unversed with red face markings and scream canisters lining its back.

"This...is not good." Eddy squeaked out.

(Cue: Unforgettable- Kingdom Hearts 3)

"What the heck is this thing?!" Gemini asked.

"I like to call it my Lump of Horror...cause it's fueled by fear!" Randall said as the monster roared. "It's gonna help me take over this company but first I'm getting rid of all of you. Attack!"

"Bring it!" Papelne said readying her gauntlet.

The Lump of Horror poured steam from its body as it charged in every direction, knocking the group about. Hope punched it as did Papelene, but their strikes went right through it.

"It's no good, it's like its made of slime!" Theo said.

"Wait...slime?" Moltar said. "That's it! David, Fran, freeze it!"

"Actually, I have a better idea. Ready, Sectonia?" David asked.

"I'm always ready, David. Let's go!" Sectonia said as the two went into action. They went to opposite sides of the creature and formed a massive glyph. They then struck from opposite sides as they leaped into the air.

"Here we go! This is…!" David started.

"Our strongest attack!" Sectonia said.

"Combination Arte: Twin Wave!" David and Sectonia said as blue and pink energies emerged from their blades, combining into a single beam and tearing into the Lump of Horror's body.

"That Arte…!" Estelle said in shock. "Allow me to return the favor."

"Hold on Estelle. This is an Unversed. So let's let Aqua let out her grief on this thing." Hope said. "After all remember. They were a part of the events that lost us two good friends."

"Yes. I'm ending this." Aqua said. "Waterga!" she shouted as she created a massive water barrier as it went into the Unversed, washing away its slime leaving only the machine parts.

"No! Why can't anything go my way?! WHY?!" Randall screamed as everyone saw a damaged, but operational door.

"Sulley… I think you know what to do." Mike said.

"I'm all over it." Sulley smirked as he ran up to Randall and gave him a good roar. It was later he was brought to the same door he was banished through.

"I'll find my way back here, ya know!" Randall shouted as he was forced through.

"Ma, the gator's back again!" a voice shouted.

"Oh he ain't gettin away this time!" another said as lots of bashing could be heard inside.

"Eeesh. Glad I'm not him." Gemini said as the door was closed shut.

"Now then, there's just one last thing to do." Sulley said ready to smash the door.

"Hold on, Sulley." Hope said. "Sora, care to lock him out for good?"

"My pleasure." Sora said using his keyblade to lock the door as it disappeared, the same with keyholes used in the past.

At long last afterwards, it was time to send Boo back. They were about to make Boo laugh so the door would open, but all of a sudden they were sent back to the Laugh floor.

"Okay...back here...so now what?" Hope said.

"Well...I hardly recognized you in that ridiculous form...but I know it's you...brother." a voice said as the hooded figure returned as he pulled it back to reveal a masked face.

"I figured you would be here." Jesse said.

"You're that masked boy from Valentia." Ace said.

"So you finally show yourself… Vanitas." Hope said.

"Well...this is quite the reunion we're having here. And on this wonderful world where screams were collected for energy...and this company was what made it happen." Vanitas said grabbing a canister.

"For the last time, we stopped collectin' screams a long time ago! We're done scaring kids for power!" Mike snapped.

"Then how do you explain these canisters of surplus scream. Though I must thank this world for all it did for me." Vanitas said.

"All it did….So that's it. That's how you brought yourself back. You used the negative emotions from the kids." Jexi said.

"Monsters Incorporated had more than enough ways for Vanitas to reform himself. He also must've used Randall in someway to get what he wanted too." Hope said.

"I needed a pawn and he was perfect. All those negative emotions were enough to complete my body and reconstruct my heart, but while I still stand...my heart is still incomplete." Vanitas said.

"Ironic. Didn't know you even have a heart." Jesse said.

"But we know what you're on about. You're after Ven." Hope said.

"Yes...I want that half of me...that sleeps within his heart." Vanitas said summoning his keyblade.

"Huh?!" Sora asked.

"Sora… we never told you this, but when you were little, Ven made a special bond with you and joined with your heart." Hope said.

"Wait...are you saying Sora had Ventus' heart the whole time?!" Emo asked.

"Whoops. Surprise." Dan said.

"And it's all true. But maybe it's best we start 10 years back." Hope said. "Back when Ventus and Vanitas battled inside their heart, and the resulting battle shattered Ven's heart. After which, Ventus fell into eternal sleep."

"He's been waiting for so long...his birth by sleep. And we're not going to stop now...not when we're so close." Jexi said.

"Quiet...you insignificant specks. You will return him to me!" Vanitas said as Sora grasped his chest in pain.

"Hey!" Theo called getting Vanitas's attention as he pointed behind the masked darkness. "Made you look."

Vanitas turned around and saw Sulley behind him. He roared at him before grabbing Vanitas tightly.

"Argh! Let me go!" Vanitas cried.

"Ha! What's wrong, Vanitas? For someone charged on negative emotions, you sure get riled up easily." Jesse said.

"You...How dare you mock me!" Vanitas said before Sulley and Mike chucked him through several doors before shredding the last one.

"...That is so going on YouTube." ZS said holding a video camera.

"Trillion hits, easy." David said.

"That won't keep him for long, but at least we got him out of this place." Hope said. "But when he comes back… we'll be ready. Right everyone?"

"You bet your hat I'll be ready." Jesse said.

"By the way, that was quite the move you two lovebirds pulled off." Zelos said to David and Sectonia.

"Someone's been reading their Valentine's from each other, am I right?" Theo asked.

"Wh-what?!" Sectonia asked as she blushed in embarrassment.

"What gave you that idea?" David asked.

"Just call it a hunch." Theo said.

"Well, it kind of is true. We've been traveling together for so long, after all." David said. "Lots of people didn't like her in this form, but I didn't care. I just knew that there was something about her that just spurred my heart, you know?"

"Speaking of hearts...we should probably figure out how to get Ven out of Sora." Mark suggested.

"Not now. We would need two things. The power of Waking...and Ven's body." Pit said.

As the group left for the next world, Hope and Aqua grouped up.

"When should we tell em about Ven?" Hope whispered.

"When I finally face my other self… and retain Master's keyblade and bring back our world." Aqua said.

"I don't know about The Land of Departure… but I know for sure we'll get Master's Defender back and find the other you." Hope said.

"Hope...my world can always be brought back. Did you forget I was the one who sealed it?" Aqua asked.

"Oh, right." Hope said. "All that aside… I promise that all five of us will return things to the way they were."

"Five?" Aqua asked.

"The five of us groups. Sorry, can get a little confusing." Hope said.

"Being around you for so long, I'm used to it." Aqua said.

"Heh… thanks for being a friend I'm so close to, Aqua." Hope said. "And soon… we'll return the favor by bringing back yours."